|That you have a wheel vs a tiller makes a big difference in how people dispose themselves around the cockpit while racing.
On a boat with a wheel, the main trimmer tends to stand in the cockpit just aft of the track during a tack or gybe to make any necessary adjustments; often the cam cleats are oriented aft, but whether athwartships or aft, it's relatively easy for the trimmer to exert sufficient strength to shift the car quickly.
On a boat with a tiller, the main trimmer tends to sit on the coaming beside the helmsperson. With our original/present setup, the trimmer moves the car simply by reaching down beside the coaming and pulling the line directly up or easing it down; he or she is well placed to exert a good solid pull. With the windward sheeting car, he or she had to bend almost double to exert a pull horizontal to the track, without which the line would not go in the cleat (and that's not changeable). The problem is redoubled when it's blowing; when the boat is lying on its ear, the poor main trimmer is fighting with the helmsperson for something to brace against while simultaneously bending double, which puts him or her in an unbalanced position with the head (his or hers) lower than the tail. Uncomfortable, ineffective and potentially dangerous. Everyone hated it, so I took it off.
C&C 27 Mk IV